Engine races, throttle stick, vacume leak

Asked by Gin Oct 15, 2018 at 09:18 PM about the 1997 Ford Escort 4 Dr LX Sedan

Question type: Maintenance & Repair

Can't find any vaume leaks but engine races like
throttle stuck and brakes get squishy while driving
or coming to a stop.

1 Answer

43,910

Saying your brakes don't feel right makes me think you have a ruptured diaphragm in the power brake booster. The booster utilizes vacuum from the engine intake and can cause a huge vacuum leak and fast idle. Pull the booster hose off and plug the vacuum with your thumb and see the engine idle down to normal. Then replace booster.

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